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Inflammation may be associated with mortality in dialysis patients. This study aims to summarize the prognostic value of two common inflammatory markers, C-reactive protein (CRP) and interleukin-6 (IL-6) for dialysis outcome. A total of 109 CRP studies and 22 IL-6 studies were identified from PubMed and EMBASE after systematic searching and assessment. The combined hazard ratios (HRs) of CRP and IL-6 for mortality were analyzed. For all-cause mortality (ACM), both CRP and IL-6 could significantly predict the outcome, with the pooled HRs of 1.142 (95%CI: 1.118-1.166) and 1.152 (95%CI: 1.094-1.214) for CRP and IL-6, respectively. For cardiovascular disease mortality (CVDM), the pooled HR of CRP (1.182, 95%CI: 1.134-1.232) was close to that of IL-6 (1.181, 95%CI: 1.068-1.307). Therefore, elevated levels of CRP or IL-6 were significantly associated with higher ACM and higher CVDM in dialysis patients. The predictive value of the inflammatory biomarkers may be useful in clinical practice.
Zhang et al. (Fri,) studied this question.